... ItemsCraft Ability 1Surface FinishHASL,Immersion Gold,Flash Gold,Gold Plating,OSP,Immersion Tin etc.2Layers2-30 layers3Minimum Line width3mil4Minimum Line space3mil5Min space ... ,PCB assembly,FPC,rigid board,flex board,rigid-flex board,Blind via board,bured via board,single board,double-sided board,multi-layer board.Hasl board,immersion gold,immersion silver,plating ...